Question

multiple choice question
the plateau in this line represents the saturation effect that is seen whenever a carrier protein is involved in transport.
if the concentration of solute drops, how does the rate of facilitated diffusion change?
it slows down
it stays the same
it speeds up

Explanation:

Facilitated diffusion depends on the concentration gradient and carrier proteins. When the solute concentration drops (lower gradient), the rate of facilitated diffusion slows because there's less solute to move down the gradient, and the carrier - mediated process is also affected by the concentration difference.

Answer:

It slows down